Planoghapirco



J. A. E. SELLAR. PRESSURE SYRINGE AND SUBCUTAN-EOUS' NEEDLE;

APPLICATION FILED OCT- 271.1917- '1,316,394. 4 Pa1 ;entedSept.16,1919, I

'ruu'mm mam PLANnnRAPu'cm, WASHINGTON. Ix C.

* QFFIQEJ mo n AXEESELLAR, "or nvnnnm'r, tt nssnonnsn'r rs,AssIeNon. i'o"rfinl FAICHNEY coMrAnY, inc gaoonronn'rlon' on MASSACHUSETTS.

\ j J rnnssnnn-synnven Ann snnonmnn'ons NEE L T (222 Mam iamy eommg 7 Bea. know thatL JOH A. sens,

, citizen of the United States, residjngat Everett, in the, county ofMiddlesex, and

State ofiMassaehusetts, have invented new and useful Improvements inPressure Syr inges and Subcutaneous Needles, of which the following isvaspecification. 1

Thisrinvention relates toa prussure syringe and (subcutaneous, needle.

The. object of the inventlon is to, provide a a pressure syringe andsulbcutaneous needle cocmhlned and COIIIPI'lSlIlg a serum onflurdcontainer which will not leak, whiehJwill be ahsolutelyxsealed and whichcan be rendered sterile andu freeafrom contamina{ tion,.,but which willbe readily adaptalole for use by the application of direct pressure uponthe pistonlof theisyringe witholl' any danger or possibility of the Vfingerslor of any extraneous or contaminating material coming incontactwith the sealing medium or the contents of the container. j

The object of the'invention is further to provide a device i-of theehara'cter set forth,

which "is entirely free from anyipossibility of corrosion or climaticorlchemicalchanges. The mventlon. ,CQIlSlSts 1n. an-1mproved containerconstitutingasyringe andin the particular manner in which the neck ofthe container is sealed by means of 11a stopper which, while heing perfectly tightso that i no foreign matter can get into the barrel of-thecontainer and contaminate the, serum or fluid containedtherein, stillcan he: imme diatelyyejected by hydraulic or other pres sure hy means ofthe piston. V

V The 'nvention flll'tllGPCOIlSlSl'zS the conin L struction-of the hubtowwhich a hypodermic needle is. fastened and in the,,means forconnectingthe hub tothe containers.

i The invention-v finally consists in the com hination and arrangementof parts set forth in the following specification and particularlypointed outin the claims thereof.

Referring to the drawings: 3 Figure 1 is a sectional; s am-sf my improvesyringe ands-needle: v

*Fig. 2 is an enlarged detail section of the neck gportion oh the ysyringe.

' Fig. 3 1s an end elevation of t, Fig. 4 is an enlarged side elevationof. the needle and its hub. v

Fig, {5 section taken of at one end thereof in anec'k 9, preferably ISpecification of Lettersl'atelit. pat nt s ptflg, 1 Applic ationhfiledQctober 27,1917.}.ser a1 1e.1 8,+6,-- ii ii of less diameter thanthat'oftheloarrel16 V and having at its fou ter end, one or' moreannular flanges 10 thereon. The neck 9 is provided with a passageextending there through, aportion :11 of whichhas parallel sides whilethe outer end 12 of said passage is itapered, or the same may havestraight l walls or a small portion of thehole m'ay;

be groundout larger than the body portion,

of the hole, so that saidpassage, while be: ing illustrated in thedrawings as having parallelsides with the outer end 12 of the passagetapered, may have parallel sides throughout or may have parallel'sides aportion of the passage made of smaller dialmeter than the rest of, theassageso to] forma shoulder. I a A stopper ,13 fits lthe' taper 12 ofthe passage'and is forced thereinto' a slight pressure; 1 Said stopperis preferably formedfof, cork or other material of im- A 1 glass or anyother, suitahlematerial and shouldhe treated with a luloricatingcompound, ,such as paraflin, glycerin 'or any perviousistructure, butit"maylbe made of. i

other lubricant capable of heingsterilized. (Thevneedle 14 is fast toja1111101715 which has annular flanges, 16 17 a on its periph I-I very'.The end of saidhuh opposite that to "which the needle 14;, is-fastenedis tapered at't18, saidfend beingpreferahly concavely tapered, The hub15 provided with slots 19 constituting lateral openings which extendinto theduot-QQ of said hub, but lateral openings are not necessarilyformed rl as slotsbut may be "formed; asja k hole or a plurality ofholes eXtendIngtrans-i ,Yersely of; the hub and into the duet, ,Said

hulb 15 is connectedtothe neck'9 of the syringe by a tubular member 21,wh ch 1s preferably for ed of rnloher and the inside

